There are some ready to mix cappuccinos, lattes and mochas (and some other things, I think) by the milk tea at the supermarket. Last time there was also coffee milk tea. To try or not to try? Which one(s)?
Caffeine can also be habit forming and it is a stimulant, a synthetic one that the body can do without, can cause palpitations in high doses. It's also has diuretic qualities. So, if you're just trying out of curiosity, just take it with lots of milk or cream. You'll still taste the coffee in your buds. Enjoy~~ 
